from rest_framework.views import exception_handler
from rest_framework.response import Response
from rest_framework import status
from django.db import DatabaseError
import logging

logger = logging.getLogger('django')


def custom_exception_handler(exc, context):
    """
    自定义异常处理
    :param exc:  异常类
    :param context:  抛出异常的上下文
    :return: response响应对象
    """
    response = exception_handler(exc, context)
    if response is None:
        view = context['view']
        if isinstance(exc, DatabaseError):
            logger.error(f'[{view}] [{exc}]')
            response = Response({'message': '服务器内部错误'}, status=status.HTTP_507_INSUFFICIENT_STORAGE)
    return response


def jwt_response_payload_handler(token, user=None, request=None):
    """
    自定义jwt认证成功返回数据
    """
    return {
        'token': token,
        'id': user.id,
        'username': user.username
    }
